More than one at once?
 

I set up all my preferences for pixie dust then started setting up spotlight, but pixie dust stopped working. Not sure if everyone has this, but only one effect can be active at a time for me. Is there someway to make them both work? ones bound to middle mouse button the others set to shake.

This is a feature that's been requested, but we haven't had a chance to work on OmniDazzle much for the last several years. Apologies, but not possible.